USB: serial: usb_wwan.c: remove dbg() usage

dbg() was a very old USB-serial-specific macro.
This patch removes it from being used in the
driver and uses dev_dbg() instead.

CC: "Bjørn Mork" <bjorn@mork.no>
CC: Rusty Russell <rusty@rustcorp.com.au>
CC: Mauro Carvalho Chehab <mchehab@redhat.com>
CC: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/serial/usb_wwan.c

@@ -178,7 +178,7 @@ int usb_wwan_ioctl(struct tty_struct *tty,
 {
 	struct usb_serial_port *port = tty->driver_data;
 
-	dbg("%s cmd 0x%04x", __func__, cmd);
+	dev_dbg(&port->dev, "%s cmd 0x%04x\n", __func__, cmd);
 
 	switch (cmd) {
 	case TIOCGSERIAL:
@@ -191,7 +191,7 @@ int usb_wwan_ioctl(struct tty_struct *tty,
 		break;
 	}
 
-	dbg("%s arg not supported", __func__);
+	dev_dbg(&port->dev, "%s arg not supported\n", __func__);
 
 	return -ENOIOCTLCMD;
 }
@@ -212,7 +212,7 @@ int usb_wwan_write(struct tty_struct *tty, struct usb_serial_port *port,
 	portdata = usb_get_serial_port_data(port);
 	intfdata = port->serial->private;
 
-	dbg("%s: write (%d chars)", __func__, count);
+	dev_dbg(&port->dev, "%s: write (%d chars)\n", __func__, count);
 
 	i = 0;
 	left = count;
@@ -229,8 +229,8 @@ int usb_wwan_write(struct tty_struct *tty, struct usb_serial_port *port,
 			usb_unlink_urb(this_urb);
 			continue;
 		}
-		dbg("%s: endpoint %d buf %d", __func__,
-		    usb_pipeendpoint(this_urb->pipe), i);
+		dev_dbg(&port->dev, "%s: endpoint %d buf %d\n", __func__,
+			usb_pipeendpoint(this_urb->pipe), i);
 
 		err = usb_autopm_get_interface_async(port->serial->interface);
 		if (err < 0)
@@ -249,8 +249,9 @@ int usb_wwan_write(struct tty_struct *tty, struct usb_serial_port *port,
 			spin_unlock_irqrestore(&intfdata->susp_lock, flags);
 			err = usb_submit_urb(this_urb, GFP_ATOMIC);
 			if (err) {
-				dbg("usb_submit_urb %p (write bulk) failed "
-				    "(%d)", this_urb, err);
+				dev_dbg(&port->dev,
+					"usb_submit_urb %p (write bulk) failed (%d)\n",
+					this_urb, err);
 				clear_bit(i, &portdata->out_busy);
 				spin_lock_irqsave(&intfdata->susp_lock, flags);
 				intfdata->in_flight--;
@@ -267,7 +268,7 @@ int usb_wwan_write(struct tty_struct *tty, struct usb_serial_port *port,
 	}
 
 	count -= left;
-	dbg("%s: wrote (did %d)", __func__, count);
+	dev_dbg(&port->dev, "%s: wrote (did %d)\n", __func__, count);
 	return count;
 }
 EXPORT_SYMBOL(usb_wwan_write);
@@ -278,15 +279,17 @@ static void usb_wwan_indat_callback(struct urb *urb)
 	int endpoint;
 	struct usb_serial_port *port;
 	struct tty_struct *tty;
+	struct device *dev;
 	unsigned char *data = urb->transfer_buffer;
 	int status = urb->status;
 
 	endpoint = usb_pipeendpoint(urb->pipe);
 	port = urb->context;
+	dev = &port->dev;
 
 	if (status) {
-		dbg("%s: nonzero status: %d on endpoint %02x.",
-		    __func__, status, endpoint);
+		dev_dbg(dev, "%s: nonzero status: %d on endpoint %02x.\n",
+			__func__, status, endpoint);
 	} else {
 		tty = tty_port_tty_get(&port->port);
 		if (tty) {
@@ -295,7 +298,7 @@ static void usb_wwan_indat_callback(struct urb *urb)
 						urb->actual_length);
 				tty_flip_buffer_push(tty);
 			} else
-				dbg("%s: empty read urb received", __func__);
+				dev_dbg(dev, "%s: empty read urb received\n", __func__);
 			tty_kref_put(tty);
 		}
 
@@ -303,8 +306,7 @@ static void usb_wwan_indat_callback(struct urb *urb)
 		err = usb_submit_urb(urb, GFP_ATOMIC);
 		if (err) {
 			if (err != -EPERM) {
-				printk(KERN_ERR "%s: resubmit read urb failed. "
-					"(%d)", __func__, err);
+				dev_err(dev, "%s: resubmit read urb failed. (%d)\n", __func__, err);
 				/* busy also in error unless we are killed */
 				usb_mark_last_busy(port->serial->dev);
 			}
@@ -356,7 +358,7 @@ int usb_wwan_write_room(struct tty_struct *tty)
 			data_len += OUT_BUFLEN;
 	}
 
-	dbg("%s: %d", __func__, data_len);
+	dev_dbg(&port->dev, "%s: %d\n", __func__, data_len);
 	return data_len;
 }
 EXPORT_SYMBOL(usb_wwan_write_room);
@@ -378,7 +380,7 @@ int usb_wwan_chars_in_buffer(struct tty_struct *tty)
 		if (this_urb && test_bit(i, &portdata->out_busy))
 			data_len += this_urb->transfer_buffer_length;
 	}
-	dbg("%s: %d", __func__, data_len);
+	dev_dbg(&port->dev, "%s: %d\n", __func__, data_len);
 	return data_len;
 }
 EXPORT_SYMBOL(usb_wwan_chars_in_buffer);
@@ -401,8 +403,8 @@ int usb_wwan_open(struct tty_struct *tty, struct usb_serial_port *port)
 			continue;
 		err = usb_submit_urb(urb, GFP_KERNEL);
 		if (err) {
-			dbg("%s: submit urb %d failed (%d) %d",
-			    __func__, i, err, urb->transfer_buffer_length);
+			dev_dbg(&port->dev, "%s: submit urb %d failed (%d) %d\n",
+				__func__, i, err, urb->transfer_buffer_length);
 		}
 	}
 
@@ -458,7 +460,9 @@ static struct urb *usb_wwan_setup_urb(struct usb_serial *serial, int endpoint,
 
 	urb = usb_alloc_urb(0, GFP_KERNEL);	/* No ISO */
 	if (urb == NULL) {
-		dbg("%s: alloc for endpoint %d failed.", __func__, endpoint);
+		dev_dbg(&serial->interface->dev,
+			"%s: alloc for endpoint %d failed.\n", __func__,
+			endpoint);
 		return NULL;
 	}
 
@@ -522,8 +526,8 @@ int usb_wwan_startup(struct usb_serial *serial)
 		port = serial->port[i];
 		portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
 		if (!portdata) {
-			dbg("%s: kmalloc for usb_wwan_port_private (%d) failed!.",
-			    __func__, i);
+			dev_dbg(&port->dev, "%s: kmalloc for usb_wwan_port_private (%d) failed!.\n",
+				__func__, i);
 			return 1;
 		}
 		init_usb_anchor(&portdata->delayed);
@@ -548,7 +552,8 @@ int usb_wwan_startup(struct usb_serial *serial)
 			continue;
 		err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 		if (err)
-			dbg("%s: submit irq_in urb failed %d", __func__, err);
+			dev_dbg(&port->dev, "%s: submit irq_in urb failed %d\n",
+				__func__, err);
 	}
 	usb_wwan_setup_urbs(serial);
 	return 0;
@@ -683,11 +688,11 @@ int usb_wwan_resume(struct usb_serial *serial)
 	for (i = 0; i < serial->num_ports; i++) {
 		port = serial->port[i];
 		if (!port->interrupt_in_urb) {
-			dbg("%s: No interrupt URB for port %d", __func__, i);
+			dev_dbg(&port->dev, "%s: No interrupt URB for port\n", __func__);
 			continue;
 		}
 		err = usb_submit_urb(port->interrupt_in_urb, GFP_NOIO);
-		dbg("Submitted interrupt URB for port %d (result %d)", i, err);
+		dev_dbg(&port->dev, "Submitted interrupt URB for port (result %d)\n", err);
 		if (err < 0) {
 			dev_err(&port->dev, "%s: Error %d for interrupt URB\n",
 				__func__, err);